Feed device

ABSTRACT

Feed-mixing device comprising a container with a side wall having a dispensing opening which can be closed off with a slide, in front of which a removing device is placed which, for example, comprises a roller with teeth. When the roller rotates, the teeth extend inside the side wall. On a first peripheral section of the roller, the teeth are placed in such a manner that they do not extend inside the side wall. Thus, the slide can be positioned in such a manner that it runs in a fluent and continuous manner with respect to the side wall, while the assembly still forms a compact arrangement.

TECHNICAL FIELD

The present invention relates to a feed-dispensing device according tothe preamble of claim 1, in particular comprising a container with aside wall and an, in particular substantially vertical mixing and/orcutting device which is situated inside said container and can berotatably driven, wherein, in the side wall, a dispensing opening isprovided which can be closed by means of a slide which is slidable alonga path, wherein the feed-dispensing device also comprises a removingdevice for removing feed contained in the container therefrom, whereinthe removing device comprises a body which is placed substantially infront of the dispensing opening and outside the container, parallel tothe side wall, which body is rotatably driven about an axis and providedwith a plurality of feed-entraining projections, wherein at least aplurality of, and in particular all, projections extend through thedispensing opening as far as into the container, at least in anoperating position, when the body rotates.

PRIOR ART

U.S. Pat. No. 5,803,375 discloses a feed-mixing wagon with a receptaclecontaining a first cutting device. The side wall of the receptaclecomprises an opening which is closable by means of a slide, and a secondcutting device placed in front thereof. In a first embodiment, thesecond cutting device can be displaced inwards in such a manner that theknives of the second cutting device extend into the container. Inanother embodiment, the slide is convex, with the knives of the secondcutting device extending into the container after the slide has beenpushed up.

A drawback of the feed wagons known from U.S. Pat. No. 5,803,375 is thefact that they are either complex due to the second cutting devicemoving inwards, or cause disturbances in the circulation of the feedinside the container due to the inwardly directed slide when the lattercloses the opening or due to the inwardly directed knives of the secondcutting device. As a result thereof, the first cutting device willalways have to be at a greater distance to the opening which may lead toa deterioration in the transfer of feed towards the opening.

SUMMARY OF THE INVENTION

It is an object of the present invention to at least partly eliminatethe abovementioned drawbacks or at least to provide a usablealternative.

This object is achieved by a feed-mixing device of the kind mentioned inthe preamble which is characterized by the fact that the feed-dispensingdevice furthermore comprises a positioning device which is configured torotate the body about the axis until an at-rest position is reached inwhich all projections project less far into the container than anoutermost peripheral path of all these projections. As long as there isa distance between the projections, there will always be a position inwhich the projections project less far into the container than themaximum, the outermost peripheral path, i.e. when the longest projectionpoints straight into the container. Due to the fact that the projectionsproject less far into the container in the at-rest position, the mixingand/or cutting device in the container and the removing device can inprinciple be placed more closely together, thus making it possible toensure an improvement in the feed dispensation without having todisplace, e.g. tilt or move, the removing device for this purpose. It isalso possible for the peripheral paths and therefore the operating areasof the mixing and/or cutting device to overlap one another. It is, forexample, possible for the mixing and/or cutting device to be active whenthe removing device is in an at-rest position and vice versa. It shouldbe noted that in this case, it will be advantageous if the mixing and/orcutting device can then also be placed in a corresponding at-restposition.

It should be noted that the feed wagon known from U.S. Pat. No.5,803,375 does not comprise such a control system, so that it is notpossible to ensure that it is placed in an at-rest position: it isalways possible for knives to project into the container to the maximumdegree when the second cutting device is stationary. As a resultthereof, it is still necessary to position the first and second cuttingdevice further apart. Partly for this reason, the closing slide of thedevice known from U.S. Pat. No. 5,803,375 is curved convexly inwards, asthe knives of the second cutting device are (may be) directed into thecontainer to their maximum degree. This inward convex shape also has adisturbing effect on the circulation of feed in the container. With thepresent invention, the slide can be less convex, as the projection intothe container which has to be taken into account is smaller. The slidecan therefore have a more fluent shape with respect to the rest of theside wall, resulting in the very important advantage of improved mixingbehaviour in the container. After all, the rotating feeder may moreeasily become caught behind every inwardly directed projection, such asa (more) convex slide, resulting in undesirable creeping and the like.The advantage of the present invention therefore lies in the positioningdevice which can ensure a more advantageous positioning of the removingdevice. All this will be explained in more detail below.

Advantageous embodiments of the present invention are described in thesubclaims. In particular, the body, viewed in projection on aperpendicular plane to the axis, has a plurality of projections, and afirst connecting line between a first pair of neighbouring projectionsis at a smaller distance to the axis than the distance to the axis of asecond connecting line between two other neighbouring projections on thebody, and the at-rest position comprises that the first pair ofneighbouring projections are situated closest to, in particular directlyin front of, the dispensing opening. More particularly, the secondconnecting line runs parallel to the dispensing opening, so that each ofthe two projections are situated as far as possible from the dispensingopening.

In this case, a plurality of projections are present in projection. Theydo not have to be situated in a perpendicular plane to the axis ofrotation, but may also, for example, be provided in the form of a spiralor the like. It is even preferable to provide only one or at most twoprojections in a perpendicular plane to the axis of rotation, as thisreduces the risk of elongate feed, such as grass, from being wound up.

Advantageously, the projections are dimensionally stable. Thisguarantees reliable positioning of the body, without movable orotherwise non-dimensionally stable projections interfering with theinternal mixing and/or cutting device or with the mixing of the feed inthe container. It should be noted that the connecting line is in eachcase accommodated between the respective ends of the projections, asthis generally defines, at least in the at-rest position, a minimumdemarcation to a surface, such as a slide. Of course, in the operatingposition or, more appropriately, in the operating state, that is to saywith the body rotating, the space required for the rotating body will bedetermined by the projection, the end of which is furthest from the axisof rotation of the body, that is to say the extreme peripheral path.

Advantageously, the slide is formed and positioned in such a manner thatthe path of the slide intersects a peripheral path of at least a part ofthe projections in the operating position, and that the path does notintersect the projections in the at-rest position. Again, it is pointedout here that the operating position means that the body with theprojections rotates. In this embodiment, optimum use is made of thepossibilities which the body with the projections according to theinvention offers. In the at-rest position, for example, the slide can beclosed, so that the vertical mixing and/or cutting device in thecontainer can perform its task without being disturbed. When the slideis opened, the removing device can be made to rotate, i.e. brought toits operating position, in order thus to remove feed, which is nowthoroughly mixed and/or cut, from the container, and distribute it over,for example, a feeding location. On the one hand, this embodiment can bekept very compact, as the body with the projections can be placed veryclose to the container, in particular the dispensing opening. After all,in the at-rest position, the projections are effectively and guaranteedto be sufficiently far away from the dispensing opening. On the otherhand, if the slide is of a suitable shape, the container may be formedin an optimum manner, that is to say, for example, as fluently aspossible, without the slide in the closed position adversely affectingthe operation of the vertical mixing and/or cutting device.

In particular, the slide is either straight or has a shape whichsubstantially corresponds to the shape of the side wall. This means thatthe slide forms a fluent continuous shape with respect to the side wall,especially has the same curvature (radius) in the same direction. Withregards to its shape, the slide can then form a part of a regularlyshaped container. For example, said container is round and the slide hasthe same curvature radius as the rest of the side wall. Advantageously,the container is elliptical or at least elongate and rounded. Inparticular the side wall, with the slide in the closed position, issubstantially mirror-symmetrical. In other words, the tip and/or bottomof the slide adjoins the side wall of the container. In these cases,optimum circulation of feed in the container is guaranteed without theslide projecting inwardly in an undesirable manner.

In embodiments, the slide may be slidable in an upward or horizontaldirection, following the side wall. In such embodiments, the slide canthus be moved out of the way in an expedient manner without being toomuch in the path of either the mixing and/or cutting device or of theremoving device. In the embodiment which follows the side wall, it isthe non-exclusive preference to guide the slide, as it were as a slidingdoor, either inside the side wall, which in that case is configured tobe double-walled at least locally, or on the outer side of the side wallin order not to disrupt mixing.

Advantageously, the slide can be folded or slid telescopically. Thus,for example, any double-walled portion of the side wall or increase inheight of the device as a whole can be limited.

In particular, but not exclusively, the projections are identical inform, that is to say congruent. This ensures that the structure issimple and comprises a limited number of different components. Inaddition, all projections in principle thus have the samefeed-entraining capacity. This applies in particular if the body whichhas been provided with the projections is cylindrical. Then, therespective ends of all the projections are at the same distance from theaxis of rotation of the body. By distributing the projections in anirregular fashion across the periphery, it is possible for theconnecting lines between (ends of) neighbouring projections to be at adifferent distance from the axis of rotation. In particular, there is anangle between the projections of the first pair of neighbouringprojections of at least 80°, preferably at least 100°. A usefulembodiment is, for example, an initially regular distribution from whichone or more projections are removed, or at least a distribution in whichthe projections are substantially regularly distributed across a secondcomplementary peripheral section and are missing from a first peripheralsection which then forms a kind of gap in the distribution of theprojections.

However, it is also possible to use a non-cylindrical body, such as anelliptical or flattened cylinder. Thus, it is possible for theconnecting lines between (ends of) neighbouring projections to be at adifferent distance to the axis of rotation even with projections whichare evenly distributed across the periphery. In yet another alternativeembodiment, the body comprises a series of interconnected pipes or otherelongate component bodies to which the projections are attached.

In yet another alternative embodiment, not all the projections protrudeequally far from the axis of rotation. In the first peripheral section,there is then at least one projection, the end of which is at a smallerdistance to the axis of rotation. This at least offers the advantagethat it is not necessary to provide a section free of projections or atleast a section where the projections are at a greater distance from oneanother, and that the feed can thus, in principle, be removed from thecontainer in an even more even way. Of course, it is also possible toapply combinations of the abovementioned measures, such as a firstperipheral section where the projections are at a greater distance apartand are lower/shorter and/or the body is flattened or otherwiseasymmetrical.

In an advantageous embodiment, a first peripheral section is free ofprojections across at least 80°, preferably at least 100°. This ensuresthat the removing device can easily be positioned close to thedispensing opening, with a large range of ratios between thelength/height of the projections and the cross section of the body. Inthe case of relatively short projections and/or a relatively large anglewithout projections, the body can generally be positioned nearer thedispensing opening. In particular, a projection is present in at least 3and preferably in at least 5 positions, distributed across the secondperipheral section which is complementary to the first peripheralsection. With such a minimum number of projections, a more or less evenremoval of the feed is ensured. In this case, the theoretical case ofone or two projections is indeed an alternative, but, in practice, thisresults in uneven removal. In practice, it has been found to beadvantageous, depending on the distribution, viewed along the axis ofrotation, to provide at least 5 projections distributed across theperiphery. In this case, the number of projections, viewed in projectionalong the axis of rotation, may be smaller if they are (in each case) inone plane. It is then possible, for example, to provide a plurality ofplanes, each comprising four projections. However, if the projectionsare provided, for example in a helical shape, or at least spread morealong the axis of rotation, it is preferable to provide more than four,for example in particular six or more, projections, viewed in projectionalong the axis of rotation.

The projections are preferably in the shape of narrowing wedges or raketines. This improves the feed-removing ability of the projections, inparticular with types of relatively long feed, such as hay and otherstalk-containing products. Advantageous examples thereof are atriangular shape with or without rounded tip, and a hook shape.

The device according to the present invention comprises a positioningdevice for rotating the body up to or into the at-rest position. Ofcourse, the expression “up to or into the at-rest position” isunderstood to mean an end position and not a position which is movedthrough during rotation, as this already occurs once during eachrotation. The rotation up to or into the at-rest position can inprinciple be carried out by hand, for example by turning a handle.Advantageously, however, the positioning device comprises a sensor formeasuring a rotation position of the body and for emitting a measuredposition signal, as well as a control circuit for rotating and/ordetaining the body to and/or into the at-rest position on the basis ofthe position signal. Thus, it can automatically be ensured that thecorrect at-rest position is assumed. The sensor is advantageously anangle or rotation sensor which is configured, for example, as aninductive, optical, magnetic or mechanical sensor. Thus, a metalprojection (such as a needle or the like) may be attached to the axis ofthe body, with an inductive sensor detecting whether said projection issituated opposite the sensor.

Alternatively or in addition thereto, the slide may be slidable in anupward direction and, at the bottom, comprises a narrowed part which hasat least one ascending oblique side, which narrowed part is slidablebetween adjacent projections in such a manner that the oblique sidepositions the body by pushing away the projection touching the obliqueside. Such a slide is suitable for detaining the body in the at-restposition.

The device furthermore advantageously comprises a drive device fordriving the body in a rotating manner. As a result thereof, removal caneasily be controlled and regulated. In addition, the at-rest positioncan be adjusted in a reliable manner due to the rotation of the body.Advantageously, the drive device furthermore comprises a brake or otherstop means for detaining the body in the at-rest position. Inparticular, the drive device is configured for a maximum rotary speed ofthe body of at most 100 revolutions per minute. Not only is this amplysufficient for most removal operations, but it also offers the advantagethat a non-rotationally symmetric removing device does not suffer fromimbalance during rotation. In most cases, either the body itself will benon-cylindrical, or, if it is indeed cylindrical, the projections willnot be evenly distributed or will not be congruent. This intrinsicimbalance of the removing device will become noticeable in an adversemanner at higher rotary speeds, such as, in particular, at rotary speedssuitable for cutting of feed. It should be noted that U.S. Pat. No.5,803,375 specifically discloses a (second) cutting device with rotaryspeeds of 1000-3000 rpm.

In an advantageous embodiment, the distance between a bottom one of theprojections which, in use, extend into the container and a bottom edgeof the dispensing opening is at most equal to a working distance inwhich the bottom projection can entrain feed remnants from the bottomedge. This embodiment has an advantage that said positioning of theprojection ensures the entrainment of any feed remnants from the bottomedge of the dispensing opening, as a result of which a slide cancompletely close the dispensing opening since there are no feed remnantson the contact surface of the bottom edge of the slide and thedispensing opening. In addition, the positioning of the projection inthe abovementioned manner prevents any further loss of feed by ensuringcomplete contact between the slide and the bottom edge of the dispensingopening in the closed position. An additional advantage thereof is thefact that, when the mixing wagon is moved with a completely closedslide, no wear of the connection or hinges of the container occurs dueto the slide and the bottom side of the dispensing opening not being incomplete contact. In addition, new portions of feed are no longercontaminated with feed remnants as these are swept away by theprojection.

In an advantageous embodiment, the body comprises a projection which, inuse, extends underneath the container, wherein the distance between thecontainer and said projection at most is equal to a working distance sothat the bottom projection can entrain feed remnants from the bottomedge of the dispensing opening. This embodiment has the same advantagesas the abovementioned embodiment. In this embodiment, the projection, ora plurality of such projections, move(s) underneath the container, andtherefore the bottom edge and entrains feed remnants which hang from thelatter. This also keeps the dispensing opening cleaner.

In an advantageous embodiment, the working distance is between 5millimetres and 10 centimetres, preferably between 2 and 5 centimetres.Test results have shown that when the projection is positioned at thelevel of said distances, the cleanliness of the bottom of the dispensingopening is greatest. These distances apply to roughage (grass-basedsilage). When using feed which is, for example, granular, otherdimensions may apply. The shape of the projections may differ andinclude: a tooth shape for a metal projection; a brush or one or moresticks for plastic materials, for example rubber. The projections may befitted on the body in a fixed or detachable manner. Of course, anycombination of the abovementioned variants is likewise possible.

BRIEF DESCRIPTION OF THE DRAWING

The invention will be explained briefly below with reference to thedrawing, in which:

FIG. 1 shows a diagrammatic view in perspective of a device according tothe invention;

FIGS. 2 a and 2 b diagrammatically show a detail of the device withclosed and open slide;

FIGS. 3 and 4 show alternative embodiments of the roller 10 withprojections 11 of the removing device, in projection along the axis ofrotation;

FIG. 5 shows a diagrammatic partial view in perspective of a drive forthe removing device;

FIG. 6 shows a diagrammatic sectional view of a device according to theinvention; and

FIG. 7 shows a detail of FIG. 6.

DESCRIPTION OF THE FIGURES

FIG. 1 shows a diagrammatic view in perspective of a device 1 accordingto the invention. This comprises a container 2 with a side wall 3 and aninternal mixing device 4 with an auger 5. Slide 6 can close off adispensing opening 7 and can be moved by means of a slide motor 8.

Reference numeral 9 denotes a removing device which comprises a roller10 with teeth 11 and a roller drive 12. Reference numeral 13 denotes anundercarriage.

The illustrated device 1 is particularly suitable for grass and grassproducts which have to be cut and/or mixed. This takes place in thecontainer 2, which is a receptacle with an upright side wall 3. Thereceptacle 2 is often slightly elongate in order to prevent feed fromjust being rotated without being mixed or cut. This mixing and/orcutting is carried out here by means of a mixing device 4 whichcomprises an auger 5. If desired, it can also comprise a bottom scraper.The mixing device may, for example, rotate in the direction of arrow B.

Furthermore, the side wall 3 has a dispensing opening 7 which can beclosed off by a slide 6. A slide motor 8, such as a stepping motor,serves to move the slide in the direction of double arrow A. The slide 6has a shape which corresponds to the shape of the container 2 and theside wall 3, respectively. When the slide 6 is closed, the inside of thecontainer 2 is smooth, without projections, and the side wall 3 runs ina fluent, symmetrical manner. Obviously, it is possible to use a slidewhich is shaped differently, but in that case a possible advantage ofthe invention may be missing.

A removing device 9 is placed in front of the dispensing opening 7 andcomprises a roller 10 which is provided with teeth 11 and can be rotatedby means of roller drive 12. In use, the teeth 11 extend into thecontainer 2, while the roller 10 can be detained in a position, theat-rest position, in which the teeth 11 do not extend into the container2 and the slide 6 can be closed.

The undercarriage 13 serves to move the device 1 as a whole. This makesit possible to dispense feed at different locations, for example in afeed alley. In this case, the device 1 can be moved by means of, forexample, a tractor (not shown) or the like. Alternatively, the device 1is self-propelled and to this end provided with a drive means andcontrol means, likewise not shown here. It is also possible to use thedevice 1 as a static mixing and/or cutting device which can dispensemixed and/or cut feed to, for example, pulled or self-propelledfeed-dispensing wagons.

FIGS. 2 a and 2 b diagrammatically show a detail of a device accordingto the invention, comprising a removing device and a closed or openslide 6, respectively. In these, as in the rest of the drawing, similarparts are denoted by the same reference numerals.

In particular, FIG. 2 a shows the removing device 9 with a roller 10comprising a number of teeth 11 which are distributed over thecircumference, with the exception of angle α. The roller 10 is rotatableabout an axis 14. The slide 6 is situated in side wall 3 in the closedposition. To this end, a first circumferential section of the roller 10,in this case essentially the section which is free from teeth anddenoted by angle α, is placed directly in front of the dispensingopening, in this case thus in front of the slide 6. Since the firstperipheral section is free from teeth, the roller 10 can be positionedvery close to the slide 6 and the side wall 3. The distance between theaxis 14 and the side wall 3 or slide 6 therefore does not need to begreater than the radius of the roller 10.

FIG. 2 b shows the removing device 9, this time with the slide 6 in theopen position after it has been pushed aside, along the side wall 3. Thedispensing opening 7 is now free to dispense feed 15, such as hay,contained in the container in the direction of arrow D. This feed 15 isentrained by the teeth 11 on the roller 10, which is moved about theaxis 14 in the direction of arrow C. It can clearly be seen that, duringrotation, the teeth 11 of the roller 10 extend inside the container,thus ensuring effective entrainment of feed.

As the slide 6, due to the tooth-free peripheral section, can in fact bepositioned in the peripheral path of the teeth 11, a very compactarrangement is possible which still ensures that the side wall 3 runs ina fluent manner: when the slide is closed, in principle there is noirregularity in the side wall 3 of the container 2, thus ensuringoptimum and undisturbed mixing in the container. And the slide can bepositioned in this manner due to the fact that the connecting linebetween two neighbouring projection tips, in practice usually the twoprojection tips on either side of the projection-free first peripheralsection, comes closer to the roller than any other connecting linebetween two neighbouring projection tips. Conversely, an approximatelystraight slide 6 which, after all, will almost always have a curvatureradius which is much larger than that of the body, the roller 10, willcome close to the roller 10 up to said connecting line. This cantherefore be closer with the first peripheral section than with anyother peripheral section.

FIGS. 3 and 4 show alternative embodiments of the roller 10 withprojections 11 of the removing device, in projection along the axis ofrotation. FIG. 3 shows a roller 10 having teeth as projections and witha first peripheral section denoted by angle α and a second peripheralsection denoted by angle β. In the first peripheral section, the teeth11″ are much shorter than the teeth 11′ in the second peripheralsection. Therefore, the at-rest position here is also the position inwhich the first peripheral section is turned towards the dispensingopening. The advantage of a section which is not completely free fromprojections is that the feed can also be entrained by the firstperipheral section. Here, a first peripheral section is shown, the sizeof which is 120°. It will be clear that the precise delimitation of thefirst and second peripheral sections can be varied slightly, but is suchthat the three illustrated short teeth are inside the first peripheralsection, and the nine long teeth inside the second peripheral section.Therefore, it is possible to alternatively speak of the angle between(the ends of) two neighbouring projections. It should be noted that itis a drawback of this embodiment that it is not rotationallysymmetrical. At high rotary speeds of, for example, a few thousandrevolutions per minute, such an asymmetry could result in an undesirableimbalance.

FIG. 4 diagrammatically shows a plan view of an elliptical, yetrotationally symmetrical roller 10 with congruent teeth 11-1, 11-2, . .. Since these teeth are at different distances from the axis 14, thelength of a connecting line between neighbouring projection tips and theaxis 14 will differ. In particular, the distance between the connectingline from the tip of tooth 11-1 to the tip of tooth 11-2 and the axis 14is smaller than the distance between the connecting line from the tip oftooth 11-1 to the tip of tooth 11-3 and the axis 14. In this case, thereare therefore two first peripheral sections which can be positionedopposite the dispensing opening or slide, namely a section comprisingonly the two teeth 11-1 and 11-2, and an opposite section comprisingonly the teeth 11-4 and 11-5. It should be noted that this embodimentshould in principle also be able to handle high rotary speeds. Otherembodiments may also have two tooth-free sections which are positionedmutually opposite in a rotationally symmetrical manner. It should benoted that a roller or other body with, for example, a single or doublerow of teeth situated above one another may also functionsatisfactorily, as there is a reduced risk of grass or the like becomingwound up. In this case, only one or two teeth are visible in projectionon a perpendicular plane to the axis of rotation. Obviously, such aroller can always be turned to an at-rest position in which no teethextend into the container. However, in this case it is the positioningdevice which then turns the roller into said at-rest position.

FIG. 5 shows a diagrammatic partial view in perspective of a drive ofthe removing device 9. The roller 10 comprises a axis 16 which is drivenby motor 17 under the control of a control device 18. Furthermore,reference numeral 19 denotes a needle or the like made of metal or, forexample, a magnet, and reference numeral 20 indicates an inductivesensor.

When the roller 10 rotates in the direction of the arrow, the needle 19will pass the inductive sensor 20 once for each revolution, and thusgenerate a signal therein which is passed on to the control device 18.The latter can determine, on the basis of the signal, whether the roller10 is in the at-rest position or not. As long as the roller 10 is not inthe at-rest position, the control device 18 can allow the motor 17 torotate. When the at-rest position has been reached, the motor can beswitched off and possibly a brake may be applied. Obviously, manyalternatives are conceivable to determine the position of the roller 10,such as an angle sensor, a magnetic sensor, etc.

FIG. 6 shows a diagrammatic sectional view of a part of a deviceaccording to the invention, in this case with an open slide 6 and a pairof projections 11 a and 11 b which are positioned in such a manner thatthey can entrain feed remnants from the bottom edge of the dispensingopening 7 and the bottom of the container 2. After the feed has beendispensed via the dispensing opening 7, there may be a remnant of thefeed, such as a tuft of grass, on the bottom of the container 2 as wellas around the dispensing opening 7, mainly on the surface on which theslide 6, in the closed position, touches the bottom edge of thedispensing opening 7. The remnants may also protrude outside thedispensing opening 7, for example hang from the bottom edge of thebottom. If the feed remnants are so big that they are not removed fromthe bottom edge by the pressure of the slide 6 sliding down, this couldlead to a slit between the slide 6 and the bottom edge of the dispensingopening 7. This may in turn cause loss of feed when the feed-dispensingdevice is being transported, wear of the connection or hinges of theslide 6 and the container 2, as well as contamination of new feedportions which come to lie on top of the remnants. In order to removethese remnants from the bottom edge of the dispensing opening 7 and thebottom, the roller 10 is provided with projections 11 a and 11 b, whichare positioned in such a way that the projection 11 a keeps the bottomedge of the dispensing opening 7 free from the feed remnants which maycome to lie upon it, and the projection 11 b keeps the bottom edge ofthe bottom of the container 2 free from the remnants which hang from it.The projections may be different in shape and may, for example, betooth-shaped, if use is made of metal projections. It is also possibleto use brushes or brush-like elements, which may be removable. When theroller 10 is being rotated, the projections come into contact with theabovementioned feed remnants and as a result of the bottom edge of thedispensing opening 7 being kept clean in this way, they keep the contactsurface of the slide 6 and the bottom edge of the dispensing opening 7free from the feed remnants, as a result of which there are no longerany impediments to the slide being closed.

FIG. 7 shows a detail of FIG. 6 with a device according to the inventionin which the teeth of the roller 10 which can entrain the feed remnantsbeing positioned in the vicinity of the bottom edge of the dispensingopening 7 and the bottom of the container. The distance d1 from thebottom edge of the dispensing opening 7 to a first projection from thebottom edge may have a height of between at least 5 millimetres and atmost 10 centimetres. Test results have shown that a distance which isbetween 2 and 5 centimetres provides the best results. The samedimensions also apply to d2, which in turn do not have to be identicalto those of d1, but do have to be in the same range of between at least5 millimetres and at most 10 centimetres. These distances apply toroughage (grass-based silage). When using feed which is, for example,granular, other dimensions may apply.

1. A feed-dispensing device, comprising a container with a side wall andan, in particular substantially vertical, mixing and/or cutting devicewhich is situated inside said container and can be rotatably driven,wherein, in the side wall, a dispensing opening is provided which can beclosed by means of a slide which is slidable along a path, wherein thefeed-dispensing device also comprises a removing device for removingfeed contained in the container therefrom, wherein the removing devicecomprises a body which is placed substantially in front of thedispensing opening and outside the container, parallel to the side wall,which body is rotatably driven about an axis and provided with aplurality of feed-entraining projections, wherein at least a pluralityof, and in particular all, projections extend through the dispensingopening as far as into the container, at least in an operating position,when the body rotates, wherein the feed-dispensing device furthermorecomprises a positioning device which is configured to rotate the bodyabout the axis until an at-rest position is reached in which allprojections project less far into the container than an outermostperipheral path of all these projections.
 2. The feed-dispensing deviceaccording to claim 1, wherein the body, viewed in projection on aperpendicular plane to the axis, has a plurality of projections, and afirst connecting line between a first pair of neighbouring projectionsis at a smaller distance to the axis than the distance to the axis of asecond connecting line between two other neighbouring projections on thebody, and wherein the at-rest position comprises that the first pair ofneighbouring projections are situated closest to, in particular directlyin front of, the dispensing opening.
 3. The feed-dispensing deviceaccording to claim 1, wherein the slide is formed and positioned in sucha manner that the path of the slide intersects the peripheral path of atleast a part of the projections in the operating position, and that thepath does not intersect the projections in the at-rest position.
 4. Thefeed-dispensing device according to claim 1, wherein the slide is eitherstraight or has a shape which substantially corresponds to the shape ofthe side wall, in particular has the same curvature, especially has thesame curvature radius in the same direction.
 5. The feed-dispensingdevice according to claim 1, wherein the side wall, with the slide inthe closed position, is substantially mirror-symmetrical.
 6. Thefeed-dispensing device according to claim 1, wherein the slide may beslidable in an upward or horizontal direction, following the side wall.7. The feed-dispensing device according to claim 1, wherein the slidecan be folded or slid telescopically.
 8. The feed-dispensing deviceaccording to claim 1, wherein the projections are congruent with eachother.
 9. The feed-dispensing device according to claim 2, wherein thereis an angle between the projections of the first pair of neighbouringprojections of at least 80°, preferably at least 100°.
 10. Thefeed-dispensing device according to claim 1, wherein the projections ofthe first pair are shorter than other projections.
 11. Thefeed-dispensing device according to claim 1, wherein the projections arepreferably in the shape of narrowing wedges or rake tines.
 12. Thefeed-dispensing device according to claim 1, wherein the positioningdevice comprises a sensor for measuring a rotation position of the bodyand for emitting a measured position signal, as well as a controlcircuit for rotating and/or detaining the body to and/or into theat-rest position on the basis of the position signal.
 13. Thefeed-dispensing device according to claim 1, furthermore comprising adrive device for driving the body in a rotating manner, wherein inparticular the drive device is configured for a maximum rotary speed ofthe body of at most 100 revolutions per minute.
 14. The feed-dispensingdevice according to claim 1, wherein the distance, which, in use, isminimal, between a bottom one of the projections which, in use, extendinto the container and a bottom edge of the dispensing opening is atmost equal to a working distance in such a manner that the bottomprojection can entrain feed remnants from the bottom edge.
 15. Thefeed-dispensing device according to claim 1, wherein the body comprisesa projection which, in use, extends underneath the container, whereinthe distance between the container and said projection at most is equalto a working distance so that the bottom projection can entrain feedremnants from the bottom edge of the dispensing opening.
 16. Thefeed-dispensing device according to claim 14, wherein the workingdistance is between 5 millimetres and 10 centimetres, preferably between2 and 5 centimetres.
 17. The feed-dispensing device according to claim15, wherein the working distance is between 5 millimetres and 10centimetres, preferably between 2 and 5 centimetres.